Goldfish Cupping

This is an funny and innovative twist on a classic prank.

Imagine them opening their dorm room door to see your entire floor covered with cups containing water and a goldfish!

Materials
Enough clear cups to cover the entire floor
Lids for each cup (so you can stack the cups in the ice chests)
A couple large ice chests
Enough goldfish to put one in each cup
A net
A team of helpers

Plan
Step 1. Buy the goldfish. It might take a couple stores to get enough. (Don't wait too long or the fish will die).
Step 2. Fill this ice chests with prepared cups (with water, goldfish, and lid)
Step 3. Carry the ice chests into the person's room and shut the door
Step 4. Start in the far corner and move your way toward the door (If the door opens inward, make sure to not put cups where you can't open the door!) You may have to leave and refill the ice chests a few times.
Step 5. Leave with all evidence and wait for them to come home

Pro's of this prank
In addition to taking a really long time to empty each cup, the added goldfish complicates matters. Will they simply flush hundreds of live goldfish? Will they try and save each one? The room is totally unusable until the matter of the cups are dealt with.

Con's of this prank
The cost of goldfish can add up. If you are short of cash, try just putting a few goldfish in the cups nearest the door and baby carrots in all of the other cups. On first impression, it will hopefully still look like a room full of goldfish.